Organisms which synthesise carbohydrates from inorganiccompounds using radiant energy are called(a) decomposers(b) producers(c) herbivores(d) carnivores

The organisms that synthesise carbohydrates from inorganic compounds using radiant energy are called producers. This process is known as photosynthesis.

Here's a step-by-step explanation:

1. Producers, also known as autotrophs, are organisms that can produce their own food from the substances available in their surroundings using light (photosynthesis) or chemical energy (chemosynthesis).

2. In the process of photosynthesis, plants (which are the most common type of producers) convert light energy, usually from the Sun, into chemical energy in the form of glucose (or carbohydrates).

3. They take in carbon dioxide from the air and water from the soil and convert these inorganic compounds into organic compounds.

4. The energy from the Sun is used to split the water into hydrogen and oxygen. The hydrogen then combines with the carbon dioxide to form glucose.

5. The oxygen is released back into the air, and the glucose is used by the plant for growth and reproduction.

6. Therefore, the correct answer is (b) producers.

Decomposers (option a) are organisms that break down dead or decaying organisms, and they do not produce their own food. Herbivores (option c) and carnivores (option d) are types of consumers, not producers. They consume other organisms for energy rather than producing their own food.